1"

The 1" Watts 007 double check assembly began production in 1989. The original 007 was replaced with the 007M1 in 1991. The "M" stands for modification. The 1" 007 went through one modifications for a total of two different models (007 and 007M1). Repair parts do not interchange between originals and "Modification" models so be sure of your model before ordering repair parts. The 007 is an inline check design with a single access cover. The body is of bronze construction. Fully testable.

The 1" Watts 007M1 double check assembly began production in 1991 and was replaced with the 007M2 in 1993. The "M" stands for modification. The 1" 007 went through one modifications for a total of two different models (007 and 007M1). Repair parts do not interchange between originals and "Modification" models so be sure of your model before ordering repair parts. The 007 is an inline check design with a single access cover. The body is of bronze construction. Fully testable.

The 1" Watts Series 709 Double Check Valve Assembly was in production from 1973-1993. It is a bronze bodied, two cover, wye pattern device. The 709 uses a plastic "cage" type seat and a brass check poppet. The plastic cage locks into the cover with a quarter turn. A hot water version was made and designated with a "HW" after the model number. The hot water version uses a stainless steel seat. No special tools are required for servicing

The 1" Watts 719 Double Check Assembly began production in 2003 and is still currently in production. This is a two cover, bronze bodied device. Check covers unthread from the body. Checks are not self contained and covers have spring tension against them. Use caution when servicing. The check poppets are plastic and a replacable plastic seat threads into the body. In 2009, A lead free version was introduced, designated by a "LF" prefix. No special tools are required for servicing.

The 1" Watts 775 Double Check Assembly was produced from 1998-2003. The body was made of nickel plated copper. Single cover with modular check assemblies. Check modules thread into body. No special tools are required for servicing.

The 1" Watts 008 Spill Resistant Pressure Vacuum Breaker began production in 1994 and is still currently in production. The body is made of bronze and uses plastic internal parts. The check and air inlet are modularized single cartridge style. No special tools are required for service.

The 1" Watts Series 009 Reduced Pressure Zone Assemblies are Watts "contractor grade" RPZ device. They were in production from 1989-1992. The original 1" 009 was replaced by the 009M2 in 1992. The 009 features a one cover design and is constructed of bronze and use check modules that slide into the body and are held in place with a retainer. The relief valve assembly slides down between the retainer and is directly under the cover. The check modules and relief valve assembly come apart for service. The original 009's parts do not interchange with the "M" models, so please be sure which model you have before ordering. No special tools are required for servicing 009 Series devices.

The 1" Watts Series 009M2 Reduced Pressure Zone Assemblies are Watts "contractor grade" RPZ device. They began production from 1992 and are still currently being produced. The 009M2 features a one cover design and is constructed of bronze and use check modules that slide into the body and are held in place with a retainer. The relief valve assembly slides down between the retainer and is directly under the cover. The check modules and relief valve assembly come apart for service. The original 009's parts do not interchange with the "M" models, so please be sure which model you have before ordering. In 2013, a lead free version became available, designated by the prefix "LF". No special tools are required for servicing 009 Series devices.

The 1" Watts Series 900 Reduced Pressure Zone Assemblies was in production from 1970-1988. The 900 was an inline check design and is constructed of bronze. The device must be removed for service. The check modules and relief valve assembly come apart for service. Special tools are recommended for servicing 900 Series devices.

The 1" Watts 909 Series Reduced Pressure Zone Assemblies were manufactured from 1979 and are still currently in production. The 909 is a bronze bodied device. Watts also made a hot water version of the 909 which was distinguished by the suffix "HW" and is approved of temperatures up to 210F. It features two check covers and a seperate relief valve cover. Check valves are self contained and the relief valve is a stem type. In 2010, the LF909 was introduced to comply with the new "Lead Free" laws. All repair parts were converted to lead free in 2013. Lead free repair parts will fit both regular 909 and lead free LF909 models. All 909 models have replaceable seats and require no special tools for repair.

The 1" Watts 909 HW Series Reduced Pressure Zone Assemblies were manufactured from 1979 and are still currently in production. The 909 HW is the hot water version of the Series 909 and can handle temperatures up to 210F. The 909 HW is a bronze bodied device. It features two check covers and a seperate relief valve cover. Check valves are self contained and the relief valve is a stem type. In 2010, the LF909 was introduced to comply with the new "Lead Free" laws. All repair parts were converted to lead free in 2013. Lead free repair parts will fit both regular 909 and lead free LF909 models. All 909 models have replaceable seats and require no special tools for repair.

The 1" Watts 919 Series Reduced Pressure Zone Assemblies began production in 2003 and are still currently being produced. The 919 is a bronze bodied device with three covers. Check valves are poppet style and the relief valve is a stem type. Springs are not contained and covers will have tension, use caution when servicing. In 2010, the LF919 was introduced to comply with the new "Lead Free" laws. All repair parts were converted to lead free in 2013. Lead free repair parts will fit both regular 919 and lead free LF919 models. All 919 models have replaceable seats and require no special tools for repair.

The 1" Watts 995 Reduced Pressure Zone (RPZ) was produced from 1998-2009. The body was made of nickel plated copper. Modular check assemblies thread into body. The relief valve body is constructed of plastic and has a union fitting that threads onto the body. Uses an external sensing line. No special tools are required for servicing.

The 1" Watts 800 Series pressure vacuum breaker (PVB) is the first PVB produced by Watts. It began production in 1982 and was discontinued in 1991 when it was replaced by the 800M2. Bronze body construction with non replacable seats. No special tools are required for servicing.

The 1" Watts 800M2 Series pressure vacuum breaker (PVB) was produced from 1991-1994. The 800M2 was replaced with the 800M4. The 800M2 featured a bronze body construction with non replacable seats. No special tools are required for servicing.

The 1" Watts Series 800M4 is a pressure vacuum breaker (PVB) began production in 1994 and is still currently being produced. It features a bronze body with plastic internal parts. In 2010, A lead free version was introduced, which is tagged LF800M4. "Lead free" models use the same internal parts as the "leaded" versions. A "freeze resistant" model was introduced in 1995 and was tagged under the 800M4-FR. Some repair parts are different for the FR, so please be sure which model you have before ordering parts.

The 1" Watts Series 800M4-FR pressure vacuum breaker began production in 1995 and is still currently being produced. In 2010, A lead free version was introduced, which is tagged LF800M4-FR. The lead free and leaded versions use the same internal parts. The "FR" stands for "freeze resistant" and contains a small relief built into the air inlet float to prevent damage if frozen. Please note, this device is freeze resistant, not freeze-proof. This device should still be drained and winterized in freezing conditions. The valve features a bronze body with plastic internal parts. Check seats are replacable and thread into the body. No special tools are required for service.